ISO 9001 ISO 14001 AS 9100 CERTIFIED
Mini-Circuits
®
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661
The Design Engineers Search Engine Provides ACTUAL Data Instantly at
®
Notes: 1. Performance and quality attributes and conditions not expressly stated in this specification sheet are intended to be excluded and do not form a part of this specification sheet. 2. Electrical specifications
and performance data contained herein are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions. 3. The parts covered by this specification sheet are subject to
Mini-Circuits standard limited warranty and terms and conditions (collectively, “Standard Terms”); Purchasers of this part are entitled to the rights and benefits contained therein. For a full statement of the Standard
Terms and the exclusive rights and remedies thereunder, please visit Mini-Circuits’ website at www.minicircuits.com/MCLStore/terms.jsp.
For detailed performance specs
& shopping online see web site
minicircuits.com
IF/RF MICROWAVE COMPONENTS
The Big Deal
• LowInsertionLoss(2.0dBtypical)
• Goodclose-inrejection
• Versatilesmallsize,coaxial,1.43"length
Product Overview
TheVBF-1945+BandPassFilterisconstructedusinginternalLTCCBandPassFilterstructuretoachieve
repeatableperformance.Covering1945MHz±95MHz,theseunitsofferlowinsertionlossandgoodrejec-
tionatthebandrejectedges.BuiltusingMini-CircuitsprovenunibodyconstructionwhichintegratestheRF
connectorswiththecasebody,theVBF-1945+takesverylittlespaceandmeetsruggedtestlabsystem
environment.
Feature Advantages
GoodRejectionclosetopassband Providesgoodrejectionofsignalsclosetothepassband,forimprovedsystemperformance.
CompactVersatileCase
(1.43"x0.41")
Enablesuseinavarietyofapplicationsincludingspaceconstrainedconnectorizedsystems.
Connectors:SMAFemale(1),SMAMale(1)
RuggedUnibodyConstruction Mini-CircuitsUnibodyconstructionallowssurvivabilityincriticalapplicationsincludingmilita-
rizedorindustrialsystems.
Key Features
VBF-1945+
50Ω1850to2040MHz
CASESTYLE:FF704
Page1
Coaxial
Bandpass Filter
ISO 9001 ISO 14001 AS 9100 CERTIFIED
Mini-Circuits
®
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661
The Design Engineers Search Engine Provides ACTUAL Data Instantly at
®
Notes: 1. Performance and quality attributes and conditions not expressly stated in this specification sheet are intended to be excluded and do not form a part of this specification sheet. 2. Electrical specifications
and performance data contained herein are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions. 3. The parts covered by this specification sheet are subject to
Mini-Circuits standard limited warranty and terms and conditions (collectively, “Standard Terms”); Purchasers of this part are entitled to the rights and benefits contained therein. For a full statement of the Standard
Terms and the exclusive rights and remedies thereunder, please visit Mini-Circuits’ website at www.minicircuits.com/MCLStore/terms.jsp.
For detailed performance specs
& shopping online see web site
minicircuits.com
IF/RF MICROWAVE COMPONENTS
50Ω1850to2040MHz
Coaxial
VBF-1945+
Bandpass Filter
Applications
•HarmonicRejection
•Transmitters/Receivers
Features
•Smallsize
•Temperaturestable
•Ruggedunibodyconstruction
+ RoHS compliant in accordance
with EU Directive (2002/95/EC)
The +Sufx has been added in order to identify RoHS
Compliance. See our web site for RoHS Compliance
methodologies and qualications.
VBF-1945+
INSERTION LOSS
0
20
40
60
1400 1900 2400 2900 3400 3900
FREQUENCY (MHz)
INSERTION LOSS (dB)
VBF-1945+
INSERTION LOSS
0
20
40
60
80
100
0 1000 2000 3000 4000 5000 6000
FREQUENCY (MHz)
INSERTION LOSS (dB)
1.0
2.0
3.0
4.0
1850 1900 1950 2000 2050 2100
VBF-1945+
VSWR
1
100
10000
1000000
0 1000 2000 3000 4000 5000 6000
FREQUENCY (MHz)
VSWR
1.0
2.0
3.0
1850 1900 1950 2000 2050 2100
*Passbandrating,deratelinearlyto0.25Wat100°Cambient
Permanentdamagemayoccurifanyoftheselimitsareexceeded.
REV.B
M129173
VBF-1945+
AD/CP/AM
111107
Maximum Ratings
OperatingTemperature -55°Cto100°C
StorageTemperature -55°Cto100°C
RFPowerInput* 1.5Wmax.at25°C
B D E wt
.410 1.43 .312 grams
10.41 36.32 7.92 10.0
Outline Dimensions ( )
inch
mm
CASESTYLE:FF704
Connectors Model Price Qty.
SMA VBF-1945+ $34.95ea. (1-9)
Frequency
(MHz)
Insertion Loss
(dB)
VSWR
(:1)
Typical Performance Data at 25°C
0.30 67.55 3349.77
300.00 29.47 107.34
1000.00 35.80 69.99
1400.00 52.82 46.90
1550.00 23.37 28.71
1800.00 2.50 1.58
1850.00 2.02 1.58
1900.00 1.88 1.69
2040.00 1.76 1.29
2200.00 5.25 5.68
2500.00 13.24 27.99
2900.00 20.02 53.43
4500.00 46.92 47.55
4900.00 37.86 44.11
5700.00 32.47 27.83
Typical Frequency Response Functional Schematic
Parameter F# Frequency (MHz) Min. Typ. Max. Unit
Pass Band
CenterFrequency — — — 1945 —MHz
InsertionLoss F1-F2 1850-2040 — — 3.0 dB
VSWR F1-F2 1850-2040 — — 2.5 :1
Stop Band, Lower InsertionLoss DC-F3 DC-1500 —20 —dB
VSWR DC-F3 DC-1500 —25 —:1
Stop Band, Upper InsertionLoss F4-F5 3600-5700 —25 —dB
VSWR F4-F5 3600-5700 —20 —:1
F4F2F1F3
ATTENUATION (dB)
FREQUENCY (MHz)
DC F5
Electrical Specications at 25°C
Outline Drawing
.312 Across Flats
in some models